SIDE TWO-IN-ONE SIM/TF CARD SLOT: PATENT design for smart watches, which makes it characteristic and convenient. Support Communication anytime anywhere. Support GSM850/900/1800/1900 MHz. (Note:The SIM Card and TF Card are not included.)

INFORMATION SYNCHRONIZATION: Support APP for Apple IOS and Android OS smart phone. With the APP connected, the SMS and notifications on the smart phones will be synced to the watch. You can use the watch read the message and the notifications(Twitter, Facebook, Whatsapp SNS Info) on the watch derectly. Support Dial Hands-Free after bluetooth connection. Support Contacts Sync.

Choice 1: USE as Cell Phone(Sim Card Needed, See description for "Which Carrier OK") / Choice 2: USE as Smartwatch(NO Sim Card Needed, See description for Android & IPHONE SYNC, Some Function Blocked with no Sim Card and Memory Card)

IPHONE Partial Available, CAN NOT SYNC ALL(See desciption for Detail)

ANDROID Phone Can SYNC all(APP needed, See description for how to find APP)

Warning: Charge by computer USB port ONLY, unauthorized charger MAY DAMAGE the battery. Don't Heat battery or leave the watch in hot condition. Stop using the battery on damaged or swelled condition and contact seller at once.